Breeze combustion method and device

Abstract

The invention provides a pulverized coal combustion method which includes the steps: the primary air pulverized coal airflow is blown to a combustor through a primary air channel; the pulverized coal airflow is injected into the furnace for combustion from the combustor and the combustor nozzle; wherein, the method also includes that an uneven intensified electric field is applied in the combustor to enable the pulverized coal to be fed into the combustor to have corona charging in the uneven intensified electric field; the oxidation-reduction reaction of the combustion is intensified; the firing and combustion speed are accelerated; the efficient low-oxygen combustion is realized; meanwhile, the charged pulverized coal particles generates the dense-thin separation of the pulverized coal under the effect of the electric field force; the double functions of combustion intensification and pollution control are realized.

Description

technical field [0001] The present invention relates to a pulverized coal combustion method, in particular to a method for charging the pulverized coal gas stream and producing concentration separation and modification, and also relates to a pulverized coal burner used in the above combustion method. Background technique [0002] At present, coal accounts for 30% of the world's total energy demand, pulverized coal burned in large-scale power station boilers accounts for more than 50% of the world's total coal consumption, and coal-fired power generation accounts for about 40% of the world's total power generation. The nitrogen in the coal and the nitrogen in the combustion air are converted into nitric oxide (NO) and nitrogen dioxide (NO) during the combustion process 2 ), these are often referred to as NO X The nitrogen oxides are directly related to the formation of acid rain and photochemical smog, as well as the reduction of the ozone layer. NO X It can also enter the...

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Problems solved by technology

[0005] However, these two types of combustion methods achieve their functions by changing the structure of the burner without any additional force and special treatment effect on the pulverized coal flow. Therefore, the existing pulverized coal combustion technology still has the possibility of innovation and further improvement the necessity of

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